Home / 30,595.36-42,240-20,002.72

Finding the Fourth Proportional to 30,595.36, 42,240 and 20,002.72

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Solution

The fourth proportional to 30,595.36, 42,240 and 20,002.72 is: 27,615.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,595.36 : 42,240 = 20,002.72 : x
  2. Step 2: Convert to fraction form
    30,595.36/42,240 = 20,002.72/x
  3. Step 3: Cross multiply
    30,595.36x = 42,240 × 20,002.72
  4. Step 4: Simplify right side
    30,595.36x = 844,914,892.80
  5. Step 5: Solve for x
    x = 844,914,892.80/30,595.36
  6. Step 6: Final answer
    x = 27,615.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.